15. Millions of crabs migrate on the Christmas Islands towards the shore to mate and populate.
There are around 43.2 million crabs on the island in the Indian Ocean.
16. The 110-acre ‘Snake Island’ in Sao Paulo has 4,000 snakes. Which is one snake for every 6 square yards. It is one of the world’s deadliest islands.
It is also home to Golden Lancehead. Its venom is capable of melting human flesh.